Adjustable brake stand



May 31, 1932- F. OHLER ADJUSTABLE BRAKE STAND Filled Aril 14, 1950 2 Sheets-Sheet 1 Jwoenbz Ma 31, 1932. F. LfOHLER 1,360,394

ADJUSTABLE BRAKE STAND Filed April 14, 1950 2 Sheets-Sheet 2 M-X iQ/LZM,

Patented May 31, 1 932 f smss mm; OE-FI CE FR NK: L. OHLER, or mornno, oniaflassxenoa T MACHINE COMPANY, or] TOLEDO,

OHIO, A CORPORATION OFyOHIO ADJUSTABLE B AKE srmnn Application filed April '14,

" This invention relates-to-an adjustable b'rakev stand, witlrspecialreference to the.

mounting for an electrically controlled elevatorbrake f a In elevator installations it is-customary to provide 7 brakes in. which a plurality of shoes are applied'to the brake drum'by' m'echanical means, such as springs, and released by an electromagnet. The primary object ofthe" present invention is to provide a simple a and inexpensive mountingfor a brake of this type. In'its present specificiembodiment the oppositely disposed frames or armswhich carry the electromagnets are somounted that either one may be independently adjusted about a pivot and then rigidly secured to the support whichcarries the drum; In a mount ing constructed according to my invention, inorder to compensate for wear of the brake linings,itis1normally necessary to make only a single adjustment on each side, Either brake supporting Y arm may be; released to cleanor replace a liner without releasingthe The invention is illustrated in connection with an elevator support comprisinga base 5 above whichismounted a shaftfi-carrying a cable drum 7 and a brake drum 8. At each side of the brake drum 8 there zis a brake supporting frame or arin 9 lpivotally smounte'dat 10, and formed at itsiupperend with; housing 11 in which is secured an electromagnet :12. The {upper side of the housing '11 is formed with an ear 13 bymeans of .which' it isadjustably securedto athread;

ed rod or strut l4sbetween two nuts orsleevesl5 and 16; The rod'll is intermediately sup- 5 -.port'ed by the overhangingend portion 17 f of an uprighte17,which is 'securedto thevbase' shoe -23 is caused to *the. levers 21." There are only -joints,'22 and 24,-oneach side. shoes 23 have been: properly adjusted by means of the screws 26itlis normally necessary, to compensate for the wear on the liners, only toimake' a single adjustmentonv each 1930. Serial No. 443,949.

THE ,HAUGHTONV ELEVATOR a- Sand supports one end of the shaft 6; The

rod 14 may be adjusted in the direction of its length and secured in its adjusted posi-' ,tion by nuts 18 and spacing sleeves 19.

Each electromagnet 12 has an armature '20 carried by a lever 21, which is fulcrumed at 22 on the arm 9. A brake-shoe 23 is pivoted as at 2 1 onthe lower end of the lever 21, and may be adjusted'about means of a heel 25,

ed in a flange 27 formed on the arm or frame 9.] i V When the power is turned off, the brakeforce applied to the. upper'endof the lever 21. In the present instance, this force is grip-the drum 8 by a the pivot 24: by formed at its lower end and engaged by an adjusting screw 26 mountapplied by meansof a coil spring28 acting 7 against a-=seat 29, which is adjustable on a threaded rod 30 andis-retained in adjusted position by means of lock nuts 31. The rod 30 may, as shownin Fig. 1, be mounted in theoverhanging end 17 a of the upright 17 and may be adjusted in the direction of its length and'se'cured'by nuts 32 and spacing sleeves 33. This mounting for the rod 30, however, is not essential to the fundamental features of the'invention.

In order to avoid theretention of the arma- 2 -ture -20 residual magnetism after the current hasbeen' turned off, close contact of the armature with the magnet is prevented by means of a fiber block 34 mounted in the arm 21 and adjustable by means ofa screw 35.:

lit-i is to be noted that the rod 1 1, magnets 12 and arms 9 are normally secured in fixed relation to the drum 8, and the operation of the brake-shoes 23 is effected by means of After the side, i.v e, the adjustment-of the upper end of the arm 9 longitudinallyof the rod- 14.

fThetension of the springsi28 in relation to .the power exerted by the electromagnets may, of course, be adjusted by means of the nuts '31.. In case-it is necessary to clean or replace twov working.

a liner it is only necessary to remove the nut pendently of pivotally 16 on either side, whereupon the arm 9 and the brake-shoe carried thereby may be swung outwardly away from the drum without disturbing the position of the other brake-shoe in any way. The construction, adjustment and operation of a brake in accordance wit the invention is, therefore, quite simple and comparatively inexpensive.

Vt hile I have shown and described onespecific embodiment of the invention, it is to be understood that the invention includes all such modification as may fall within the scope of the appended claims.

\Vhat- I claim is:

'1. In combination, a brake drum, pivot ally mounted brake supporting members at opposite sides thereof, means for fixing the position of said supporting members, levers fulcrumed on said supporting members, brakesshoes carried by said levers, and means for actuating said levers to set or release brakes.

I 2. In combination, a brake drum, pivotally mounted brake supporting members at opposite sides thereof, means supported indethe brake supporting members for adjusting the distance between the latter, levers fulcrumedron said supporting members, brake-shoes carried by said levers, and means for actuating said levers to set or release the brakes.

3. In combination, a brake drum, pivotally mounted brake supporting members at opposite sides thereof, means r independently adjusting either of said brake supporting members toward or away from the drum, levers fulcrumed on said supporting members, brake-shoes carried by said levers, and means for actuating said levers to set or release the brakes.

4. In combination, a brake drum, pivotally mounted brake supportin members at opposite sides thereof, means fll independ: ently adjusting either of said brake supporting members toward or away from the drum, levers fulcrumed on said supporting members, brake-shoes carried by said levers, and means for adjusting both brake supporting members simultaneously in the same direction.

5. The combination with a brake drum, of an upright supporting one end of the drum,

mountedfbrake supporting membars at opposite sides of the drum, means secured to said upright and fixing the position of said su porting members, levers fulcrumed on sa-i supporting members, brakeshoes carried by said levers, and means for actuating said levers to set or release the brakes. 1 6. The combination with a brake drum, of an upright supporting one end of the drum,

pivotally mounted brake supporting memhere at opposite sides of the drum,- means secured to said upright and supported independently of the brake su porting members. for adjusting the distance between the latter, levers fulcrumed on said supporting members, brake-shoes carried by said levers, and means for actuating said levers to set or release the h brakes.

7. The combination with a brake drum, of an upright supporting one end of the drum, pivotally mounted brake su porting members at opposite sides of the rum, means secured to said upright for independently adjusting either of said brake supporting menibers toward or away from the drum, levers fulcrumed on sai supporting members, brakeshoes carried by said levers, and means for actuating said levers to set or release the brakes.

8. The combination with a brake drum, of an upright supporting one end of the drum, pivotally mounted brake supporting members at opposite sides of the drum, levers fulcrumed on said supporting members, brakeshoes carried by said levers, means for actuating said levers to set or release the brakes, and means secured to said upright for selectively adjusting said brake supporting members either independently -or simultaneously in the same direction.

'9. The combination with a brake drum, of an upright supporting one end of the drum, brake supporting members at opposite sides of the drum, 8. strut secured to said upright above the .drum and transversely thereof,

means for securing said brake supporting members to the strut, levers fulcrumed on said supporting members, brake-shoes carried by said levers, and means for actuating said lovers to set or release the brakes.

10. The combination with a brake drum, of an upright supporting one end of the drum, pivotally mounted brake supporting members at opposite sides of the drum,- 8.

strut secured to said upright above the drum and transversely thereof, means associated with said strut for adjusting the distance between the brake supporting members, levers fulcrumed on said supporting members, brake-shoes carried by said levers, and means for actuating said levers to set or release the brakes. a

11. The combination with a brake drum, of an upright supporting one end of the drum, ivotally mounted brake supporting memers at opposite sides of the drum, 2. strut secured to said upright above the drum and transversely thereof, means associated with said strut for independently adjusting either of said brake supporting members toward or away from the drum, levers fulcrumed on said supporting members, brake-shoes carried by said levers, and means for actuating said lovers to set or release the brakes.

12. The combination with a brake drum, of an upright supporting one endoi the III drum, pivotally mounted brake supportingmembers at, opposite sides of the drum, a strut secured to said upright above'the drum and transversely thereof, means for securing said brake supporting members to the strut, levers fulcrumed on said supporting members, brake-shoes carried by said levers,

means for actuating said levers to set or .re-

lease the brakes, and means for adjusting said strut in tliedirection of its length to ad- I just both of said brake supporting members simultaneously in the same directiom 13. The combination with a brake drum, l

brake supporting membersat opposite sidesdrum, interconnected means for Slof said multaneously adjusting said members toward or away from levers fulcrumed on said supportingmembers, brake-shoes carried by said levers, and means including eleotromagnets carried by the respective brake supporting members to set or'release the brakes.

14. The combination with a brake drum, brake supporting members at vopposite sides thereof, interconnected means for simultaneously adjusting both of said supporting supporting members in the same direction transversely of the drum, levers fulorumed on said supporting members, brake-shoes carried by said levers, and means including electro-magnets carried by the respective brake support ing members to set or release the brakes.

15. The combination with a brake drum, Y

brake supporting members at opposite sides of the drum, means for adjusting said supporting members either simultaneously or individually toward or away from the drum, levers fulcrumed on said supporting members, and means including electromagnets carried by the respective brakesupporting members to'set or release the brakes.

g drum, levers fulcrumedon said supporting 16/The combination with a brake drum, 7

brake supporting members at opposite sides of the drum, means for adjusting said sup porting members eitherindividually toward simultaneously and away from the drum or in the same direction transversely of the members, brake-shoes carried by said levers, and means including electromagnets carried by the respective brake supporting members to set or release the brakes.

' In testimony whereof I have hereunto signed my name to this'specification;

the drum,

' FRANKL. oHLER;v 

